transformative characteristics and research agenda for the ... · dr lesley arnold research fellow,...
TRANSCRIPT
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Dr Lesley Arnold
Research Fellow, Curtin University, CRCSI
Director Geospatial Frameworks
World Bank Consultant
Transformative characteristics and research
agenda for the SDI-SKI step change:
A Cadastral Case Study
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Presentation Outline
Transformative Characteristics
Explain methodologies – case study
SKI Architecture and Framework
Limitations of SDIs
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The On-demand Generation
Produced by La Reel House Media https://www.youtube.com/watch?app=desktop&persist_app=1&noapp=1&v=Uo0KjdDJr1c
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SIRI has limitations
Problem lies with how we organise our data
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On-Demand Limitations – The Query
Questions are multifaceted
Answers are context dependent
Unable to be predicted
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Limitations - Forecasting Demand
High Demand Data Themes
and Areas
DisasterManagement
Foundation Spatial Data
Themes
Data as a Service
Justfor me
Just inreal-time
Justin time
Justenough
Justin case
Knowledge
Push Model Pull Model
Decoupling Point
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On-Demand Limitations – The SDI
Data not machine-accessible
Designed for Data-IN
Data integration difficult
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Open Data Portal
Web of Data
Spatial Data Infrastructure
Limitations
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On-Demand Limitations – The Data
Duplicate information
Provenance unknown
Aggregated data = LCD
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On-Demand Revolution
The Smart Phone Revolution in connectivity has created an On-demand Economy
“Access is now more important than ownership”- Futurist Kevin Kelly
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Transformative Characteristics
… When combined: Knowledge on Demand
SDI
SKI
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Cadastre 2034 - Vision
“A cadastral system that enables people to readily and confidently
identify the location and extent of all rights, restrictions and
responsibilities related to land and real property.”
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Cadastre 2034 - Vision
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One-way interaction
Two-way participation
Linked Data (Semantic Web)
Third stage in the Evolution of the Web
Web1.0
Web2.0
Web3.0
Semantic Web – Making Data Smart
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Semantic Web (Web of Data)
Knowledge Core
Data Core Process Core
Domain Ontologies
Data Provenance
Vocabularies
Sensor feeds
Images and Videos
Data formats
Process Ontologies
Upper Ontologies
Semantic Search
Geoprocesses
Natural Language Processing
WMS, WFS, WPS
Knowledge Inferencing
Rule-bases
Spatial analytics
Metadata
URI/URL/URN
Semantic Queries
Ranking and Rating
Data structure
End-user Profiles
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Query Processing
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SDI – Data Access
Focussed
SKI – Knowledge
Discovery Focussed
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Research Agenda
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Query ProcessingThe Building blocks
Process
Knowledge
Data
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Data: Building BlocksResource Description Framework
Land Parcel
Property
Premise
locatedWithin
PartOfPremise
RDF is a standard model for data interchange on the Web.
Subject Predicate Object
locatedWithin
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Resource Description Framework
RDF Schema are used to build ontologies
Land Parcel
Property
Street Address
hasParcelAddress
LocatedWithinParcel
Premise
Parcel Address
Premise Address
hasParcelAddress
associatedWithPremise
LocatedWithinParcel
URI
URIURI
URI
URI
URI
Data: Building Blocks
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Unique Resource Identifier
URI unambiguously identifies a data resource so it can be found
Shopping Centres
http://data.gov.au/doc/shoppingcentre
http://data.gov.au/doc/shoppingcentre/63540
Data: Building Blocks
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Provenance
Electronic Survey Plan
Land Authority Cadastre
(Data fudged)
UtilitiesCadastre
(Inconsistent)
Nationally Aggregated
Cadastre(LCD)
Generalised Cadastre
(Land use map)
Data: Building Blocks
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Knowledge: Building BlocksVocabularies
Controlled vocabularies – agreed terms used to support data integration
https://documentation.ands.org.au/display/DOC/Research+Vocabularies
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Knowledge: Building BlocksOntologies and Rules – Rights, Restrictions and Responsibilities
Ontologies– set of concepts in a subject area
Land Parcel
Person
ownsLand
has
has
has
MiningEPA Grants
Building
Water
Chemical use
Responsibilities
Restrictions
Rights
Heritage sitesDrainageElectric Poles
Days
Bores RULES: One bore per land parcel
RULES: Street Address Ending in 1 = Sat, Wed
Parcel Address
has
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Process: Building BlocksNatural Language Processing
NLP – Breaks down the query into manageable units
What responsibilities are associated with this land?
Polygon
feature
Planar
topology
‘Within’
Parcel, Property,
Premise, Address
Current
GPS
location
Refer to RRR
Ontology
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Knowledge: Building BlocksSemantic Search and Spatial Filtering
Semantic Search – understand searchers intent using contextual meaningsSpatial Filtering – narrowing the search by location
Natural Language
Processing
Contextual Analysis
Ontology Search
Reasoning Engines
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Process: Building BlocksProcess Ontologies
Process Ontology – knowledge required to automatically compile, coordinate and run a series of geoprocess
Identify data resources
Geo-reference
Identify PropertyPoint in Polygon
Spatial Intersect
Cadastre/Ownership
Land Use
Heritage Sites
Watering Days
Shareable
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Process: Building Blocks
Federate – joining adjacent datasetsConflate – single best dataset from multiple sources
Geoprocesses
CONFLATION FEDERATION
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Query Decomposed
Semantic Search
Spatial Filtering
Process Orchestration
Process Ontology
ONT DATA
START
PROV
Query Executed
Step 1: Interpret Step 2: Retrieve Step 3: Process
Input
Steps 1-6 Query ProcessingWhat responsibilities are associated with this land
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Steps 1-6 Query Processing
Query Decomposed
Semantic Search
Spatial Filtering
Process Orchestration
Process Ontology
ONT
End-user Profile
DATA
START
PROV
RankResults
RateResults
PortrayResults
DeliverKnowledge
END
Query Executed
Step 1: Interpret Step 2: Retrieve Step 3: Process
Step 4: PortrayStep 5: Rank and RateStep 6: Deliver
Input
PROV
Report, graph, map, image,
video etc
Provide More Context
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Open Data Portals
Linked Open Data
Web of Data(Semantic Web)
Query Processing and Spatial Analytics
TRUST(Ranking
and Rating)
DATA
PROCESS
KNOWLEDGE
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The SKI is not a centralised service or distinct entity.
The SKI embodies the behaviour of resources available in the Web of Data.
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Architecture
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SKI Framework
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For more information
Download the White Paper at http://www.crcsi.com.au/spatial-knowledge-infrastructure-white-paper/
Spatial Knowledge Infrastructure
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Thank you